Log-turner



(No Model.) 2 Sheets-Sheet 1. T. S. WILKIN.

LOG TURNER.

No. 415,315. Patented Nov. 19, 1889.

751237166665: hvenZ-or' (N0 Model.) 2 Sheets-Sheet 2.

T. s. WILKIN.

LOG TURNER.

No. 415,315. Patented Nov. 19, 1889.

N. PErLRs. PhokrLnhogmp-mr. Wailnnglun. 0.0

UNiTnn STATES PATENT OFFICE.

THEODORE S. \YILKIN, OF MILXVAUKEE, \VISCONSIN.

LOG-TU RN ER.

SIPEOIFIGATION forming part of Letters Patent No. 415,315, dated November 19, 1889.

Application filed July 11, 1889. Serial No. 317,114. (No model.)

To (zZZ- (1171mm it may concern:

Be it known that I, THEODORE WILKIN,

-a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of \Yisconsin, have invented certain new and useful Improvements in Log-Turners, of which the following is a specification.

My invention relates to that class of devices for transferring the log from the logway onto the carriage, and has reference more particularly to those employing steam, air, or other fluid under pressure for the purpose of actuating the different parts of the machine.

In the drawings, Figure 1 isatop plan view illustrating the general arrangement of the logway, carriage-tracl and saw-mill; Fig. 2, a vertical sectional view at right angles to the line of travel of the carriage; Fig. 3, a face view, partly in section.

A indicates the general frame-work of the mill; B, the log way; C, the saw-mill carriage; D, the saw, and E the floor of the mill. Asthe construction and arrangement of these form no part of the present invention, they may be modified, as found necessary or desirable.

F indicates the toothed bar, that is designed to project up through the iioor and engage the log on the logway and to raise it from its seat therein and roll it onto the saw-mill carriage.

G indicates a cylinder secu red in a horizontal position on the iloor directly in line with the bar F, as shown in Fig. 1. This cylinder is provided with a valve-stem 6!, (shown in Fig. 1,) which in turn is connected with an elbow-lever I), carried at the upper end of an upright shaftc, having at its lower end a second elbow-lever d.

The piston-rod ll of the cylinder G is provided at its forward end with an open frame or block I, having lateral ribs or flanges e, as shown in Fig. 3, the ribs or flanges projecting into the grooved faces of the guides J, secured to the floor, as shown. Elock or frame I is adapted to receive and guide the bar F, and upon reference to Fig. 1 it will be seen that the side arms of the block are each provided with a small wheel or roller f to enter the sides of the bar, which are recessed to receive them. This construction permits the bar to rise and fall relatively to the guidingblock, but at the same time prevents the bar from escaping. The bar will be inclined at times, and to afford a bearing for it and to relieve the wheels or rollers f f of undue strain the said block or frame is provided with a roller g, which is designed to support the rear face of the bar. If steam be admitted to the front end of the cylinder G, the rod H will be retracted, and as the frame or block I is secured to the piston-rod, and as the wheels ff of the block enter into therecessed sides of the bar, it will be seen that the bar will move the piston-rod. If steam be admitted to the rear end of the cylinder, the pistonrod and the bar will be carried forward, the position of the bar depending upon that of the piston-rod to which it is attached.

The lower end of the toothed bar F is pivoted to the upper end of the piston-rod of an upright cylinder K, which latter is provided with a valve-stem h, by actuating which the induction and eduction of steam are controlled. Cylinder K is provided at its lower end with lateral trunnions i, as usual in this class of devices, and is supported upon a base plate or bed j, as shown in Fig. 2. A link or rod L, secured at one end to the fra-n'ie-work and at the other to the bar F, steadies the movements of the latter and limits the swinging or oscillating of the cylinder. The valvestem 7L of cylinder K is connected by a rod 7; with one arm of an elbow-lever Z, pivoted to the frame-worlgthe other arm of said elbowlever being connected, by means of a rod on, with the lower end of a controlling-lever M, as shown. Elbow-lever cl,before referred to, is connected, by means of a rod or, with an elbow-lever 0, which in turn is connected with the lever M by a rod P, as shown. The lever M is mounted upon a universal joint q, of any desired construction, the joint being so arranged as to permit the lever to be swung backward and forward, or to either side, as desired. lVhen it is desired to roll the log onto the carriage, the lever M is moved in the direction indicated by the arrow in Fig. 2, and as the lever is connected with the valvestem (through the connections I) c d n 0 p) the latter and the valve attached thereto will be moved so as to admit steam to the front end of the cylinder G. Of course this will cause the piston-rod H to move into the cylinder, and as it thus moves inward it retracts the block or frame I, and also the upper end of the bar F. As soon as the bar F has assumed the desired inclination the lever M will be brought back to its normal position, and (by means of the intermediate connections 1) c d n 0 19) the further movement of the piston-rod prevented. Now by moving the lever M in the direction indicated by arrow in Fig. 3 the valve-stem h of cylinder K will be operated (through connections'k Z m) and steam admitted to the lower end of the cylinder, the steam thus admitted Serving to actuate the bar F-that is, raises the latter so that it will project upward behind the log on the logway. If lever M be now moved so as to admit steam to the rear end of the cylinder G, the upper end of the bar will be carried forward so as to roll the log from the logway onto the carriage. The two movements of lever M are independent of each other, so that when the lever is moved to operate valve-stem a of cylinder G the valvestem 77. of cylinder K will not be affected, and

vice versa. It will be noted that the cylinder G is located in such position as to secure the best possible results, the direct thrust given to the upper end of the bar in throwingthe log onto the carriage relieving the parts of the twisting and straining to which they would otherwise be subjected. The cylinder K is also arranged with particular reference to the work it has to perform, and it will be seen that as its piston-rod acts directly upon the end of the toothed bar the best results are secured.

Compressed air or any other fluid under pressure may be substituted for steam.

The guide-block may be grooved, if desired, and the guides J provided with the flanges e; but as this is merely a reversal of the arrangement shown it is not deemed necessary to illustrate it. I

Bar F need not necessarily be toothed, the teeth serving only to take a hold upon the log when it is-desired to turn the same.

Having thus described my invention, what I claim is 1. In combination with the toothed bar, a cylinder K, provided with a piston connect-ed with the lower end of the bar, a cylinder G, having'a piston that is connected with the upper end of the bar, and means for controlling the admission of a fluid under pressure to the cylinders.

2. In combination with the toothed bar F,

.an' uprigh'tlcylinder K, a piston working the guide positively, backward and forward,

away from and toward the log-carriage, all substantially as shown.

' 4. Ina log-turner, the combination, with the reciprocating bar pivot-ed at its lower.

end, 'of a laterally-moving guide for the bar applied to the upper end of the latter, and m ans for mov n e uide a d bar p tively, backward andforward, away from and toward the log carriage, all substantially as shown.

5. In a log-turner, the combination, with the reciprocating bar pivoted at its lower end and actuated by a fluid under pressure, of a guide for the bar, also actuated by a fluid under pressure.

6. In a log-turner, the combination, with the reciprocatingibar F and means for reciprocating it, of a cylinder G in linewithand in rear of the upper end of the bar, and a piston-rod H, working within the cylinder and connected with the bar.

7. In a log-turner, the combination, with the grooved orrecessed bar F and means for reciprocating the same longitudinally, of a guide block or frame I, provided with rollers ff, to enter the grooved sides of the bar, and

means for actuating the guide-block.

8. In a logt urner, the combination, with the grooved or recessed bar F and means for imparting a longitudinal movement thereto, of a guide-block I, provided with rollers ff, to enter the grooves in the bar, and with a roller 9, o bear against the rear face thereof,

and means 01 operating the guide-block.

9. In a log-turner, the combination, with the grooved bar F and means for reciprocating the same, of a guide-block I, provided with lateral flanges e e and rollers ff, grooved guides J J ,adapted to receive the guide-block, and means for reciprocating the guide-block.

In witness whereof I hereunto'set my hand in the presence of two witnesses.

MONROE W IL, J. G. EMERY, Jr. 

